This page explains how John J. Monaco (USATT# 51120)'s rating went from 1864 to 1859 at the 1998 Indianapolis Summer Open held on - 30 Aug 1998. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.